Improvement in refrigerators



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HERMANN E. EBEETs, or DETROIT', MICEIIGAN, AssIeNOE To HIMSELE, DANIEL Y. HoWELnoE TOLEDO, OHIO, AND lTHOMAS s. sPEAeUE, or DETEOIT,1III0HIGAN;

Letters Patent No. 109,811, daad Deventer 6, 1870.

IMPROVEMENT IN REFRIGERATORS.

The Schedule referred to in these Letters Parent andmaklng part of the same.

Tol/whom tt may concern Be it known that I, HERMANN F. EBERTs, of Detroit, in the county of Wayne and State of' Michigan,- have invented a new and useful Improvement in Refrigerators; and I do declare that the following is a and salt or other refrigerating mixture.

The nature of' this invention relates to an improved construction of a refrigerator or receptacle wherein it iis desired to preserve a low temperature.

rlhe invention consists in a receptacle of peculiar construction for holding ice and salt or any other suitable rei'rigerating mixture, in combination with any suitable box, room, car, or chest, wherein it is desirable to keep the air at alow temperature for the better preservation of the articles contained therein, as more i'nlly hereinafter described.

In the accompanyingfdrawingv- A represents a box, such as is-usually built for refrigerating purposes, provided with traps Or doors, B C, as shown opening upward from the top of' said box.

with closely-fitting caps, Ffone of which is shown in z place in iig.` 2, and one removed.

G is a funnel, through which the refrigcrating'material is passed into the annular space between the walls of the cylinder.

Il is a pipe communicating with the interior of the receptacle, through which `the rneltngs'of tho refrigcri ating material are drawn off.

rIhis pipe may extend through the hole I inthe side of the box, or through asimilar hole in the bottom of the box, and` may be provided with a suitable cock, if. desired.

The cylinder stands upon proper feet, J, and is placed in the center ofthe box A, and should be made of galvanized iron preferably.

lhis construction of a receptacle gives a large amount of cooling` surface, and, by standing upon feet, a more eqnable temperature is obtained, as the airl in t-he opening through the center' of the cylinder will` become much cooler than that upon the outside of the receptacle, consequently it falls and finds egress at the bottom, its place in ythe opening being filled from the lighter air near the top of the box, thereby keeping up a constant circulation.

Suitable grated shelves may bc placed in .the verti cal openings, (said shelves are not shown,) upon which to place any articles which it may be desired to keep in allower temperature than prevails Outside the receptacle.

One of the principal objects in placing the ice receptacle D loosely in the box is, that it may be easily removed through the trap B whenever ,it becomes necessary to clean and scald out the box Aand the inte-- rior of thc receptacle. When the-latter is rigidly se# cured in the box, and becomes foul, itis almost impossible to thoroughly clean it.

Another object, that when employed Ain cars to preserve perishable articles while in transit, differenty seasons ot' the year require more or less freezing mix ture and cooling surface of the refrigerator. With the use of these detached boxes any number required may be filled and placed in the car which the temperature may demand.

The recctacle ma v'bc s( nare rectanflilar or ofan other desired form, as I do not desire to confine mysclt to a cylindrical shape, shown.

. What I claim as my invention, and desire to secure by Letters Iatent, is-

'Ihc annular ice-receptacle D, constructed substan-v tially as described and shown, in combination with the box A, arranged to operate as set forth.

Witnesses: HERMANN F.

Taos. S. SrnAGU'E, M. STEWART.

EEIrrs. 

